any ideas, i read somebody was changing them every 4000, is that normal?

 

here I will help you out. here is a thread you need to read. the way you are going you are going to get gorilla flamed! just a piece of advice. take it for what its worth. https://www.rx7club.com/3rd-generation-specific-1993-2002-16/faq-3rd-gen-other-useful-links-68640/

 

thnx

 

i checked couldnt find answer about the spark plugs

 

Most late model NGK plugs will last 15,000 miles in a stock 7. There are some guys around here that change plugs every 5,000 miles, but that seems a bit wasteful to me.

 

On my civic I use cheap plugs and change them every two oil change. (3k per oil change) On my fd...... plugs are way more expensive lol, so i'll maybe change plugs every 3 or 4 ...5??? oil changes (2k per oil change)

 

i change them at least every year usually in the spring or 10k miles whichever comes first. i check them around the 5000 mark.